Sunburn should be avoided if you have:

6. Tendency to hyperpigmentation: the sun increases the likelihood of new age spots. 7. Many cosmetics with active ingredients - fruit acids, vitamin C or retinol. They also cause hyperpigmentation. 8. Recently there was a peeling (chemical or laser) - it is dangerous to expose the skin that has not yet recovered to ultraviolet radiation: again, because of the risk of hyperpigmentation.